Is a balloon popping endothermic or exothermic?

The heat breaks the balloon and allows the hydrogen to mix with oxygen in the air, while also providing the activation energy required for the reaction to take place. This is a highly exothermic reaction.

Can air balloons float?

Likewise, we live in a gas called Air. Our surrounding is filled with air. When anything like a balloon is filled with a gas that is lighter than the air regarding its density, then the balloon will float. So, if a balloon is filled with any of these gases, the balloon will float.

How do hot air balloons work buoyancy?

Hot air balloons rise into the air because the density of the air (warmer air) inside the balloon is less dense than the air outside the balloon (cooler air). The balloon and the basket displaces a fluid that is heavier than the balloon and the basket, so it has a buoyant force acting on the system.

What are hot air balloons filled with?

balloon, large airtight bag filled with hot air or a lighter-than-air gas, such as helium or hydrogen, to provide buoyancy so that it will rise and float in the atmosphere. Transport balloons have a basket or container hung below for passengers or cargo.

Why is h2 flammable?

Hydrogen gas is very flammable. The heat given off by the candle provides the activation energy required for the reaction that produces water from hydrogen and oxygen. This reaction is highly exothermic, producing the prodigious explosion.

Does helium explode with fire?

These balloons are commonly called helium balloons, which is a misnomer since helium is not flammable and a helium balloon will not explode when it comes in contact with fire. Helium, being less dense than air, is an inert gas and is classified as one of the noble gases as they do not react under normal circumstances.

Do air-filled balloons pop in heat?

Balloons can stick together causing them to pop as balloons they expand in the heat. This can also be helpful for helium-filled balloons that will lose float time in the heat. 15) We’ve found that if balloons are going to pop in the heat and sun, the will usually do so within the first hour.

Are hot air balloons flammable?

Most hot air balloons are made of nylon now. Tyvek is sometimes used with experimental balloons, but its flammability makes it unsuitable for most purposes. The fabric near the mouth of the balloon, where the burner is, must endure substantially higher temperatures than the rest of the envelope.